Passive infrared detector



FIG. 1 is a front perspective view of my new, original and ornamental design for a passive infrared detector;

FIG. 2 is a front view of the dector of FIG. 1;

FIG. 3 is a back view of the detector of FIG. 1;

FIG. 4 is a side view of the dector of FIG. 1, with the opposite side being a mirror image thereof; and,

FIG. 5 is a top view of the detector of FIG. 1. 

The ornamental design for a passive infrared detector, as shown and described. 